6-Zone Mixer Amplifiers: A Guide to Choosing a 100V Model

The new Rondson AM-DMT 19-inch rack-mountable mixer amplifiers are available in three power outputs: 120W, 250W, and 550W.

These multi-zone amplifiers can control up to 6 different zones. With a built-in multimedia player and message player, plus an integrated paging microphone console, this series offers an all-in-one solution for professional public address installations.

Built-in Message Player

A 100V mixer amplifier combines three functions in a single chassis: source pre-amplification, mixing, and power amplification to the line. The AM-DMT pushes integration further by adding a message player, audio sources, and priority management. Microphones, sources, and loudspeaker loops are wired to a single device.

Six independent zones, managed separately for volume and muting. Background music plays in one room while an announcement is broadcast in another, without overlapping. The priority muting function switches the targeted zone to announcement mode as soon as a microphone is used.

All routing configuration is done via dip switches on the rear panel. Once the settings are fixed in the workshop, you only retain control over the front panel.

The DMT suffix refers to the family of message player-recorders — the same technology as the DMT-100-2 or DMT-8M modules, here integrated directly into the amplifier. In practical terms, the device records and triggers its own announcements: opening jingle, closing message, recurring instructions, all programmable on a schedule. There is no longer any need for a dedicated controller or a permanently connected PC to run the public address system of a store or facility.

Six Microphone Inputs, Microphone Priority and Audio Muting

The AM-DMTs feature six distinct microphone inputs, each with a 4 mV sensitivity. A site can therefore wire its reception microphone, checkout microphone, office microphone, and evacuation call point in parallel, each routable to the zones of its choice. No multiplexing, no sharing box to add.

On the music side, everything is integrated on the front panel: a Bluetooth module, a USB port, and an SD card reader for playlists and pre-recorded messages, an FM tuner with its supplied antenna for live radio. A remote control is included as standard to operate the sources from a distance.

Three Different Amplifier Power Outputs

The only real variable between the three models is the available power. Six zones, six microphone inputs, audio sources, message player, and audio muting are common to the entire range. The choice is therefore based solely on the scale of the installation.

• The AM-6120DMT (120 W) covers light sites: a restaurant with up to 80 seats, a downtown boutique, a medical practice, a small hotel. Enough to power about fifteen 6 W ceiling speakers with a comfortable margin.
• The AM-6250DMT (250 W) will meet the majority of demands: medium-sized stores, restaurants with 100 to 200 seats, neighborhood supermarkets, nursing homes, schools, places of worship. Thirty to forty ceiling speakers without ever pushing the limits.
• The AM-6550DMT (550 W) targets large sites: hypermarkets, large places of worship, hotel complexes, industrial workshops, multi-building facilities. Up to seventy ceiling speakers, or mixed combinations with outdoor sound projectors. At this power, consumption climbs to 1350 W at peak: a ventilated technical room and a dedicated power supply are essential.

The AM-6MIC: Multi-Zone Paging Microphone Console with Built-In Multimedia Player

• The AM-6MIC paging microphone, designed specifically for the AM-DMT series, answers this need. Placed on a counter, it allows an operator to select one or more zones with a button and make their announcement.

  Gooseneck microphone, 24 V power supply, six-zone selection on the front panel, compact format that fits on any workstation. Its 650-750 mV line output aligns with the paging input of the AM-DMTs, with connection via an RJ45 cable. On a site with multiple paging points — checkouts, reception, security — nothing prevents deploying several in parallel. The microphone console is controlled separately from the amplifier.

An All-in-One 100V Solution

If the 100 V line has become the standard in professional public address installations, it is because it solves at once what low impedances complicate: long cables without significant losses, dozens of speakers in parallel on the same loop, sizing that comes down to an addition of powers. The AM-DMT range extends this logic of simplicity to the end of the chain, combining in a single rack what used to require three devices.

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